Guillaume, R., & Ritz, D. (2002). Guillaume: A life. University of Missouri Press.
Chicago-čujuhus (17. p.)Guillaume, Robert, juo David Ritz. Guillaume: A Life. Columbia: University of Missouri Press, 2002.
MLA-čujuhus (9. p.)Guillaume, Robert, juo David Ritz. Guillaume: A Life. University of Missouri Press, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.